Fitment first · Trimmer · SKU B0DSBY5M7W

AF-100 AFS Spool

AF-100 AFS Spool for Black Decker ST8600 MTE912 LST320C MTC220 BESTE620 BCK279D2 ST8600 LCC222 LSTE522 LSTE525 LST522 LST522BESTA512CM LCC340C LSTE523 LST140…

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Compatibility checkpoint

Verify this before you buy

Check the current listing
1 Match the machine model

Compare the model printed on your trimmer label with the fitment list below.

2 Confirm the line and spool spec

pre-wound spool

3 Check the part code

Match part B0DSBY5M7W or ASIN B0DSBY5M7W against the listing and your old part.

ReplacesB0DSBY5M7W
Spool typepre-wound spool
CategoryTrimmer
ConditionNew aftermarket replacement

Overview

This aftermarket replacement spool comes pre-loaded with trimmer line at the correct diameter and winding pattern for your trimmer. When the original spool runs empty or the line becomes brittle from UV exposure, swapping in a fresh spool is faster than re-winding. The pre-wound design ensures consistent bump-feed performance from the start.

Key specifications

  • Pre-wound replacement trimmer spool
  • Direct-fit for listed trimmer models
  • Bump-feed compatible winding pattern

Compatibility

This spool is designed for Black+Decker string trimmers as listed above. Confirm the spool part number, line diameter, and trimmer model before ordering to ensure a proper fit.

Installation notes

Turn off the trimmer and remove the spool cover by pressing in the retaining tabs. Remove the old spool and wipe out the housing. Insert the replacement spool, thread the line ends through the eyelets, and snap the cover into place. Test the bump-feed mechanism by tapping the head and pulling the line.

Common questions

Q: Will this AF-100 AFS spool fit my Black+Decker LSTE525 and LST140C, or is it only for older models like the ST8600?

Yes, this AF-100 AFS spool is compatible with the Black+Decker LSTE525, LST140C, and ST8600, along with other listed models that use the AF-100 style automatic feed system. If your trimmer is one of the listed models, this is the correct spool type to use.

Q: Do I need to wind line onto this AF-100 AFS spool myself before installing it in my MTC220 or LCC340C?

No, this style spool comes ready to install, so you do not need to rewind line before use. Just remove the spool cap, seat the AF-100 spool correctly in the trimmer head, feed the line through the eyelet, and reinstall the cap securely.

Q: My LST136 keeps feeding too much line or getting tangled—will replacing the spool help, and is there anything I should check during installation?

A worn, incorrectly wound, or damaged spool can definitely cause overfeeding and tangling on the LST136. When installing the new AF-100 AFS spool, make sure the line exits smoothly through the eyelet and check that the spool cap and spring are clean and seated properly, since debris inside the head can also affect feeding.

Before you buy — how to verify fitment

  1. Find your trimmer model number. It's usually on a label on the motor housing, battery slot, or lower shaft.
  2. Check spool compatibility. Compare the model number with the compatibility list above.
  3. Verify line gauge. Confirm the line thickness matches what your trimmer head requires by checking your manual or the old spool.
  4. Inspect the spool housing. Make sure the spool diameter, cap, spring post, and feed style match your trimmer head.

Frequently asked questions

How do I know this spool fits my trimmer?

Check your trimmer model number against the compatibility list above. Then verify the line gauge (.065, .080, .095) matches what your trimmer head requires — it's usually printed on the spool cap or in the manual.

Can I rewind a pre-wound spool?

Yes. Once the factory line runs out, you can rewind the spool with bulk trimmer line of the same gauge. Pre-wound spools just save time on the first load.

How often should I replace the spool?

Replace the spool when the line no longer feeds properly, the spring loses tension, or the spool body is cracked. Under normal weekend use, a spool lasts 2–4 refills before the housing wears out.

What gauge trimmer line should I use?

Match the gauge to your trimmer's power: .065" for light-duty electric trimmers, .080" for mid-range cordless, and .095" for gas-powered or heavy-duty models. Using too thick a line can stall the motor.

Where to buy

This part is available through Amazon with free returns on most orders. Use the fitment details above to compare your model, old part number, and physical specs before ordering.

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